Manganites
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Effect of Sintering Temperature on Current-Voltage Characteristics of Nanostructured Manganites
Abstract: Normal 0 false false false EN-IN X-NONE GU MicrosoftInternetExplorer4 In the present communication, nanostructured Y0.95Ca0.05MnO3 manganites using low cost sol-gel method have been synthesized. Samples were sintered at different temperatures in order to change the particle size of the samples. The crystallite size is found to increase with sintering temperature due to crystal agglomeration effect. To understand the transport properties of the presently studied samples, current-voltage (I-V) characteristics have been …
Published in Journal of Nanoscience, NanoEngineering & Applications · Vol. 4, Issue 1, 2014 · pp. 1–5 Read article
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Effect of Sintering Temperature on Dielectric Behavior of Y0.95Ca0.05MnO3 Manganites
Abstract: Ca-doped mixed valent Y0.95Ca0.05MnO3 (YCMO) manganites, synthesized using cost effective acetic acid based modified sol-gel method, sintered at various temperatures, exhibit a strong effect of sintering temperature on the structure, microstructure, dielectric and activation energy (Ea). Oxygen vacancies, located at the grain boundaries of the nanostructured YCMO samples, play an important role in governing the dielectric behavior. The peak behavior, observed in imaginary part of dielectric (εʹʹ vs. T) plots, …
Published in Journal of Nanoscience, NanoEngineering & Applications · Vol. 3, Issue 2, 2013 · pp. 24–29 Read article